.loading {
  background: url(img/loading-1.gif) no-repeat;
  position: fixed;
  height: 50px;
  width: 50px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate3D(-50%, -50%, 0);
  transform: translate3D(-50%, -50%, 0);
  z-index: 200000;
}
.block {
  display: none;
}
.Tips {
  color: #fff;
  position: fixed;
  padding: 10px 20px;
  top: 50%;
  left: 50%;
  -webkit-transform: translate3D(-50%, -50%, 0);
  transform: translate3D(-50%, -50%, 0);
  background-color: rgba(0, 0, 0, 0.7);
  border-radius: 5px;
  z-index: 2020000;
}
